Pioneer TS4, Руководство по обслуживанию, Страница: 49 / 71

TS4
49
[Channel Decoder section]
((D))
↓
<M1001(TUNER MODULE) "+5V(1st_RF AMP)":5V?>
↓
<M1001(TUNER MODULE) "+5V(SYNTH)"/
"+5V(OTHER)":5V?>
↓
<M1001(TUNER MODULE) "+3.3V":3.3V?>
↓
<M1001(TUNER MODULE) "+30V":30V?>
↓
<M1001(TUNER MODULE) "SCL(QPSK)":correct?>
↓
<M1001(TUNER MODULE) "SDA(QPSK)":correct?>
↓
[Connect the PC and setup "main.exe"environment.]
↓
[Trace "A+5V" line.]
[Trace "D+5.5V" line.]
[Trace "D+3.3V" line.]
[Trace "A+30V" line.]
[Enter IIC check]
[Enter IIC check]
((B))
(See page 47)
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
↓
[LNB Power check routine]
↓
[In the "main.exe" Window,
push F5 key.]
↓
[Examine M1001(LNB
POWER(RF INPUT)).]
↓
<13V(12.5V~14V) or
18V(17V~19V) ?>
<13V and 18V are switched
correctly ?>
↓
[Examine 22kHz(HighBand/
LowBand switching signal.]
↓
<Correctly overlayed onto 13V
or 18V?>
↓
[Execute any "Set parameter"
operation.]
(In the "main.exe" Window,
push F1 key then F9 key.)
↓
<Execute "No.7 Tuner Check"
operation.>
↓
[Examine around the
IC2001(OMEGA:STi5510A).]
<LNB_POW0 at Q1011 Base: High?>
↓
<IC1002(NJM317DL1 Voltage Regulator)
output :13V or 18V?>
↓
[Replace Q1012 or Q1009]
<A+22V or 17V input available?>
↓
<LNB_POW1 at Q1013 Base : High?>
↓
[Replace Q1010 or Q1013]
<22kHz vailable at M1001(D22)?>
↓
[Replace Q1008]
((G)) (See Page 44)
<IC1002(NJM317DL1 Voltage
Regulator) Pin 3(VIN) :available?>
↓
[IC1002(NJM317DL1 Voltage
Regulator) Pin 2(VOUT) and Pin 1
(ADJ)]
<IC1002: Voltage difference(Vout-
Vadj): 1.25V?>
↓
[Replace IC1002]
[Replace the Power Supply Ass’y]
((G)) (See page 44)
[Replace M1001]
[RF incoming signal is faulty.]
(Antenna line seems to has a
short path to the ground.)
↑
<Over-current sensing: OK?>
(Around Q1006/Q1007)
↓
[Add solder to R1014/R1015/
R1016/R1017/R1018.]
((A)) (See Page 46)
YES
NO NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
NO
NO
YES
NO
YES
YES
(From page 48)
YES
YES
((B)) (See page 47)
OK
NG
[REPLACE M1001 (BXF1108 TUNER MODULE)]